Unsolved
This post is more than 5 years old
1 Message
1
3953
January 24th, 2010 22:00
Question on Array CommPath
Hi All,
Would like to know about Array CommPath
If a storage group has production luns and also couple of LUNZ devices visible..
1. What if Array CommPath is disabled for above scenario, will the production luns loose access to hosts, or
2. Will Only LUNZ devices disappear.
Please provide clarification on this...
No Events found!
dynamox
9 Legend
•
20.4K Posts
0
January 26th, 2010 06:00
What are you trying to change it from, what OS, multipathing software ?
In my experience these type of changes (array commpath, failover mode) always required host system reboot. I would shutdown the system, change whatever setting you are trying to change and bring the host back online.
SamCl
54 Posts
0
July 27th, 2010 01:00
Please note changing the ArrayCommPath setting can have other repercussions.
For example the ArrayCommPath setting needs to be set to 1 or enabled for PowerPath multipathing. Changing this to 0 can cause PowerPath to not be able to see devices.
If you want to remove the LUNZ devices the easiest way would be to remove the lowest LUN device from the storage group and then reassign it to the storage group specifying a HLU (Host Lun Address) of 0. This would cause the LUN to override the LUNZ device.
ZepHead
88 Posts
0
July 27th, 2010 10:00
KB solution: emc99467 is a great start as to what the initiator settings should be per OS and more info.. Any failover mode change should be done with downtime planned and requires a host reboot (emc149420). Also, emc107962 explains about arraycommpath and a reboot is needed here as well (emc191533)